<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>loading</title>
    <style>
        .loader {
            position: absolute;
            top: 50%;
            left: 40%;
            margin-left: 10%;
            transform: translate3d(-50%, -50%, 0);
        }

        .dot {
            width: 24px;
            height: 24px;
            background: #3ac;
            border-radius: 100%;
            display: inline-block;
            animation: slide 1s infinite;
        }

        .dot:nth-child(1) {
            animation-delay: 0.1s;
            background: #32aacc;
        }

        .dot:nth-child(2) {
            animation-delay: 0.2s;
            background: #64aacc;
        }

        .dot:nth-child(3) {
            animation-delay: 0.3s;
            background: #96aacc;
        }

        .dot:nth-child(4) {
            animation-delay: 0.4s;
            background: #c8aacc;
        }

        .dot:nth-child(5) {
            animation-delay: 0.5s;
            background: #faaacc;
        }

        @-moz-keyframes slide {
            0% {
                transform: scale(1);
            }

            50% {
                opacity: 0.3;
                transform: scale(2);
            }

            100% {
                transform: scale(1);
            }
        }

        @-webkit-keyframes slide {
            0% {
                transform: scale(1);
            }

            50% {
                opacity: 0.3;
                transform: scale(2);
            }

            100% {
                transform: scale(1);
            }
        }

        @-o-keyframes slide {
            0% {
                transform: scale(1);
            }

            50% {
                opacity: 0.3;
                transform: scale(2);
            }

            100% {
                transform: scale(1);
            }
        }

        @keyframes slide {
            0% {
                transform: scale(1);
            }

            50% {
                opacity: 0.3;
                transform: scale(2);
            }

            100% {
                transform: scale(1);
            }
        }
    </style>

</head>

<body>
    <div class="loader">
        <div class="dot"></div>
        <div class="dot"></div>
        <div class="dot"></div>
        <div class="dot"></div>
        <div class="dot"></div>
    </div>
</body>

</html>